In an ultrasound diagnostic apparatus and a display method of the ultrasound diagnostic apparatus, a first display region including an ultrasound image of one lung of a subject captured using an ultrasound probe, a second display region including a plurality of examination location selection buttons for selecting one examination location as an examination target location from among a plurality of examination locations in the one lung, and a third display region where a first display screen including a freeze button is displayed are displayed on a monitor. In a case where the freeze button is selected, instead of the first display screen, a second display screen including a plurality of diagnostic finding buttons corresponding to a plurality of predetermined diagnostic findings is displayed in the third display region.